Improvement im machines for jointing staves



W. GEORGE. j .Ma'chinasi fox bunting St-aves. T35 903;

N0. Patented Feb. 18, 1873.

INVENTOR I WITNESSES.

AM. PHOTG-LITH!) GRAPHIC ca N. X (assomz macsss) UNITED STA ES ROBERT W. GEORGE, OF BOSTON, MASSACHUSETTS.

iaraovemeur IN MACHINESFOR commune smi es.

Specification forming part of Letters Patent No. 135,903, dated February 18, 1873.

To all whom it may concern:

Be it known that I, ROBERT W. GEORGE, of Boston, in the county of Suffolk and State of Massachusetts, have invented a certain new and useful Machine for Joiuting Staves, of

which the following is a specification:

The Nature of the Invention.

The nature of 'my invention consists, first, in combining, in a stave-jointing machine, a pair of automatically-moving cutters with a feed-chain; second, in combining, with the feedchain and the cutter-holdin g frame, cams so arranged as to cause the cutters to move-that.

is, adjust themselves to the varying width of the stave that passes between them; third, in some of the mechanical details, which will be best understood by reference to the specification.

Description of the Drawing. I

Figure 1 is a perspective view of my machine. Fig. 2 is a plan of the same. Fig. 3 is an elevation showing one of the cutters with its housing; also its method of attachment; also the cam for moving it in and out to accommodate it to the width of the stave. Fig. 4 is a part of the feeding-chain, showing the device for holding the stave upon it.

General Description.

Let A B represent the bed-plate and frame of my machine. Within the bed-pieceA an endless chain, 0, traverses. This endless chain is driven by a sprocket-wheel attached to the shaft D, and is provided with a number of buttresses, c, and spurs d, which serve, in connection with the spring G and rollers F F to feed the staves between the cutter-heads H H. The roller F F and the spur-wheel F Fig. 1, serve to keep the stave in place as it passes out of the machine or other equivalent devices may be used in place of the spur-wheel to accomplish the same object. The cutterheads H H are beveled, as shown in Figs. 2

and 3, and are provided with knives it. These cutters are hung upon shafts H, which are attached to an adjustable bed-piece, L. bed-piece L is attached to the swinging arm M by the screws 1 1. These screws work through slots to admit of the adjustment of the plate L and the cutter H. The swinging arm M swings on a pivot, m, Fig. 1, and is guided at itsupper end by a rivet and collar, m, passing through a slot and attached to the fixed plate N. D is a disk attached to the shaft 1), and has upon its periphery a cam-plate, K, which, as it revolves, contacts with the stud P on the swinging arm M, and causes the arm to move, carrying with it the cutter-head H.

The counter motion of the swinging arm M is caused by springs or weights, the whole being so arranged that, as the shaft D revolves, carrying with it the feed-chain G and the stave to be jointed, the cutters H and H move outwardly and inwardly, thus accommodating themselves to the shape of the stave. The cutter-heads are adjustable on the swinging arm M by means of the screws 1 I, so they may beadapted to staves of joints differently inclined. The cam-plate Kis made movable, so that others may be put in its place to accommodate the machine to cutting different styles of staves. E, Figs. 1 and 2, is a gage to assist the operator in placing the stave upon the feedchain.

I I claim as my invention- 1. The feeding-chain O, in combination with guide, E, pressure-rolls, spur guide-wheel F This 

